Maleic acid anhydride 6-hydroxy

P4ALEIC ANHYDRIDE, MALEIC ACID AND FUMARIC ACID] (Vol 15) 9a,21-dichloro-17-[(2-furanyl-carbonyl)oxyl]-llb-hydroxy-16a-methyl-pregna-l,4-diene-3,20-dione. See Mometasone fluroate. 

Crosslinking of amine- or hydroxy-terminated PAMAM dendrimers using cyclic anhydride - amine or cyclic anhydride - hydroxy addition reactions was employed for preparation of crosslinked thin films of very low permeability [73], Polyanhydrides, such as maleic anhydride-methyl vinyl ether copolymers, were used as crosslinking components. In the case of amine-terminated PAMAM, crosslinking and chemical stability were further increased by imidization of the maleamic acid groups retro-Michael eliminations were followed by Michael additions to further crosslink the film. 

VITAMINS - BIOTIN] (Vol 25) - [MAT. ETC ANHYDRIDE, MALEIC ACID AND FUMARIC ACID] (Vol 15) - [MAIONIC ACID AND DERIVATIVES] (Vol 15) - [MICROBIALTRANSFORMATIONS] (Voll6) -as food additive [FOOD ADDITIVES] (Vol 11) -fortifying roan [PAPERMAKING ADDITIVES] (Vol 18) -hydrahonof [HYDROXY DICARBOXYLIC ACIDS] (Vol 13) -m meat processing [MEAT PRODUCTS] (Vol 16)... 

BA BuE-PA BE-HET BE-HHPA BE-MA BE-PA BE-SA CA CHX DMA DMBA DY 062 GA HEB HHPA HMTA MA MTHPA NMA benzoic acid monobutylester of phthalic acid monobenzylester of hexachloroendomethylenetetrahydrophthalic acid monobenzylester of hexahydrophthalic acid monobenzylester of maleic acid monobenzylester of phthalic acid monobenzylester of succinic acid citraconic anhydride cyclohexanol N,N-dimethylaniline dimethylbenzylamine high boiling tertiary amine (Ciba Geigy AG) gjptaric anhydride 2-hydroxy-4-(2,3-epoxypropoxy)benzophenone hexahydrophthalic anhydride hexamethylenetetramine maleic anhydride methyltetrahydrophthalic anhydride nadic methyl anhydride (methylbicyclo[2.2.1]heptene-2,3-dicarboxylic anhydride isomers)... 

Alkyl-substituted oxazoles have been found to react with maleic acid or its anhydride in a diene synthesis to yield substituted pyridine readily converted to pyridoxine (39). In this route, ethyl d, 1-alaninate hydrochloride is treated with formic-acetic anhydride to yield ethyl N-formyl d,1-alaninate (78%). This compound is refluxed in chloroform with phosphorous pentoxide (40), quenched with aqueous potassium hydroxide, and the organic layer distilled to give 4-methyl-5-ethoxyoxazole (I) (60%). The resulting oxazole (I) is condensed readily with a number of appropriate dienophiles to form 2-methyl-3-hydroxy-4,5-disubstituted-pyridines containing substituents (III, a, b, c) which could be converted to pyridoxine as follows ... 

Unsaturated polyesters were obtained by reacting the glycolyzed product widi maleic anhydride at a hydroxy-to-carboxyl ratio of 1 1. The hydroxyl number was determined without separation of die free glycol. The polyesterification reaction was conducted in a 2-L round-bottom dask equipped with a condenser, a gas bubbler, a thermowell, and a stirrer. The reaction mixture was heated from room temperature to 180°C in about 1-1.5 h. The temperature was maintained at 180°C for about 3 h, dien raised to 200°C and maintained until die acid value reached 32 mg KOH/g. 

Interchain copolymer formation Copolymers of reactive polystyrene and polymers with amide, mercaptan, epoxy, hydroxy, anhydride or carboxylic acid groups, copolymer of polypropylene grafted with maleic anhydride and nylon-6, copolymer of polyolefines and polystyrene, copolymer of EVA grafted with methacrylates and grafted polystyrene... 

The hydrogenation of substituted succinic anhydrides such as 65, over platinum oxide at room temperature and 3-4 atmospheres leads to the initial formation of the hydroxy lactone, 66. Further hydrogenation in acetic acid at the same temperature and pressure converts 65 into a 2 1 ratio of the lactone, 67 and the methyl acid, 68. Extended hydrogenation of the anhydride in ethyl acetate gave almost equal amounts of 67 and 68 (Eqn. 18.42). Since anhydrides such as 65 are available from Diels-Alder reactions with maleic anhydride, this procedure has synthetic utility since the hydrogenations take place exclusively on the least hindered carbonyl group of the anhydride. 

Benzoylacrylic acid has been prepared by the condensation of acetophenone and chloral to l,l,l-trichloro-2-hydroxy-3-benz-oylpropane, followed by hydrolysis to the corresponding acid and dehydration by the action of iodine, potassium iodide, and sodium carbonate on 7-phenylisocrotonic acid by bromination of /3-benzoylpropionic acid and subsequent dehydrohalogena-tion 1 and by the action of phenylzinc chloride on maleic anhydride. The present method is based on the work of von Pech-mann and others. ... 

Maleic anhydride and hydrazine give the hydroxy-pyridazinone ( maleic hydrazide ) directly, " the additional unsaturation in the 1,4-dicarbonyl component meaning that an oxidative step is not reqnired conversion of 3-hydroxypyridazin-6-one into 3,6-dichloropyridazine makes this useful intermediate very easily available. Mucohalo acids (18.1.1.4), synthons for 4-carboxy-aldehydes, are an oxidation level down and produce l-aryl-pyridazin-3-ones on reaction with arylhydrazines. ... 

Some commonly used graft monomers are acrylates, such as methacrylic acid (to enhance adhesion), acrylic esters and hydroxy functional acrylates (that can couple with polar materials, as wood). Maleic anhydride and n-vinyl pyrrolidone are also used, but with care taken to avoid potential volatilization during processing. The former is used as an adhesion promoter, the latter to enhance bio-compatibility. Specific properties depend both on the backbone or base material that is being grafted and on the graft monomer (Fig. 1). 

PHOSPHORIC ACID, DIMETHYL ESTER, WITH (E)-3-HYDROXY-A, A -DIMETHYLCROTONAMIDE (141-66-2) CsHisNOjP May react violently with antimony(V) pentafluoride. Inconqiatible with nitrates. Corrosive to cast iron, mild (low carbon) steel, brass, and stainless steel 304. Slow hydrolysis in water. Decomposes in storage at temperatures above 135°F/55°C. Incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substituted allyls, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, glycols, isocyanates, ketones, lead diacetate, magnesium, maleic anhydride, nitrates, nitromethane, phenols, silver nitrate, vinyl acetate. 

BICHROMATE of SODA (10588-01-9) A strong oxidizer. Reacts violently with reducing agents, acids, acetic anhydride, hydrazine, combustible materials, organic substances, metal powders. Reacts with acrolein, antimony trisulfide, antimony tritelluride, arsenic pentasul-fide, 1,1-dichloro-l-nitroethane, 1,3-dichloropropene, diethylamine, fluorine, hydrazine, potassium iodide, sodium tetraborate, sodium tetraborate decahydrate, sodium borohydride, zirconium dusts, i-trioxane. Incompatible with ra-bis(trichlormethyl)benzene, hydroxy-lamine. Aqueous solution is caustic incompatible with acids, alcohols, aldehydes, alkylene oxides, cresols, caprolactam solution, epichlorohydrin, organic anhydrides, glycols, maleic anhydride, phenols. Attacks aluminum copper, brass, bronze, tin, zinc, especially in the presence of moisture. 

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